cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A220185 Numbers n such that n^2 + n(n+1) is an oblong number (A002378).

Table of values

n a(n)
1 0
2 10
3 348
4 11830
5 401880
6 13652098
7 463769460
8 15754509550
9 535189555248
10 18180690368890
11 617608282987020
12 20980500931189798
13 712719423377466120
14 24211479893902658290
15 822477596969312915748
16 27940026817062736477150
17 949138434183163727307360

List of values

[0, 10, 348, 11830, 401880, 13652098, 463769460, 15754509550, 535189555248, 18180690368890, 617608282987020, 20980500931189798, 712719423377466120, 24211479893902658290, 822477596969312915748, 27940026817062736477150, 949138434183163727307360]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.